Vehicle on-board article theft warning system

A vehicle on-board article theft warning method comprising:

• a step of detecting on-board article-specific ID information transmitted from IC chips attached to on-board articles;
• a step of storing as initial ID information the detected article-specific ID information when a theft detection mode is activated;
• a step of, after activation of the theft detection mode, comparing the detected ID information consisting of on-board article-specific ID information with the initial ID information and discriminating whether or not there exists missing ID information defined as ID information contained in the initial ID information but not contained in the detected ID information;
• and
• a step of, in response to a discrimination that missing ID information exists, determining that theft of an article corresponding to the missing ID information occurred and issuing a prescribed warning.

A vehicle on-board article theft warning system comprising:

• IC chip reader for detecting on-board article-specific ID information transmitted from IC chips attached to on-board articles;
• a database at activation of a theft detection mode for storing as initial ID information the article-specific ID information detected by the detection means;
• discrimination means after activation of the theft detection mode for comparing detected ID information consisting of on-board article-specific ID information detected by the detection means with the initial ID information and discriminating whether or not there exists missing ID information defined as ID information contained in the initial ID information but not contained in the detected ID information;
• and
• warning means responsive to a discrimination that missing ID information exists for determining that theft of an article corresponding to the missing ID information occurred and issuing a prescribed warning.